Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
many hours
Grammar usage guide and real-world examplesUSAGE SUMMARY
"many hours" is a correct and usable part of a sentence in written English.
You can use it to refer to a large amount of time that has been or will be spent on an activity. For example: "I have spent many hours studying for this exam."
✓ Grammatically correct
News & Media
Academia
Wiki
Formal & Business
Alternative expressions(20)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Just many hours.
News & Media
Delivery is many hours away.
News & Media
How many hours of layover are acceptable?
News & Media
We will not eat for many hours.
News & Media
I do this for many hours.
News & Media
"I spent many hours there," she says.
News & Media
The job would take many hours.
News & Media
Queuing for essential goods took many hours.
News & Media
We talked many hours in a wheelhouse.
News & Media
How many hours do you work?
News & Media
She had been there many hours.
News & Media
Expert writing Tips
Best practice
When describing effort, combine "many hours" with action verbs to highlight dedication: "He dedicated many hours to perfecting his craft."
Common error
While acceptable, avoid using "many hours" excessively in very casual conversation; alternatives like "a long time" might sound more natural.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "many hours" functions as a determiner phrase modifying a noun. It indicates a substantial quantity of time spent on a particular activity or duration of an event. Ludwig AI confirms its common usage in various contexts.
Frequent in
News & Media
58%
Academia
18%
Wiki
12%
Less common in
Formal & Business
7%
Science
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "many hours" is a grammatically sound and frequently used phrase to denote a significant amount of time. Ludwig AI confirms its versatility across various contexts, particularly in News & Media and Academia. While highly versatile, it's best to consider your audience when using "many hours". In very formal settings, alternatives such as "numerous hours" may be more appropriate. Conversely, in informal contexts, phrases such as "a long time" can be used. Overall, "many hours" is a reliable phrase to indicate duration.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
numerous hours
Replaces "many" with "numerous", providing a more formal tone.
a considerable amount of time
Replaces "many" with "a considerable amount", emphasizing the substantial duration.
several hours
Offers a more specific but still indefinite quantity of time.
a significant duration
Substitutes "hours" with "duration", focusing on the length of time.
a lot of hours
A more informal alternative to "many hours".
a long period
Uses "period" instead of "hours", broadening the scope of time.
extended time
Emphasizes that the duration was longer than usual.
a good few hours
Similar to "quite a few", but with a slightly more emphatic tone.
substantial time investment
Focuses on the commitment of time, framing it as an investment.
quite a few hours
Adds a colloquial tone while indicating a notable amount of time.
FAQs
How can I rephrase "many hours" to sound more formal?
For a more formal tone, consider using alternatives such as "numerous hours", "a considerable amount of time", or "significant duration" depending on the context.
What are some informal alternatives to "many hours"?
In casual conversation, you might prefer phrases like "a lot of hours", "quite a few hours", or simply "a long time".
Is it better to say "many hours" or "much hours"?
"Many hours" is the grammatically correct choice. "Many" is used with countable nouns (like "hours"), while "much" is used with uncountable nouns (like "time").
What's the difference between "several hours" and "many hours"?
"Several hours" indicates a smaller, more specific quantity, typically implying between three and seven hours. "Many hours" suggests a larger, less defined quantity of time.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested